Olivier Gascuel leads a research group at LIRMM-CNRS, Montpellier. He is an associate editor of Systematic Biology and belongs to the editorial board of BMC-Bioinformatics, BMC-Evolutionary Biology, and BMC-Algorithms for Molecular Biology. He has published 110 papers and book chapters, and authored several widely used programs in phylogenetics and bioinformatics. Mike Steel directs the Biomathematics Research Centre at the University of Canterbury, New Zealand and is an associate editor of the journal Systematic Biology. He has published 120 papers and book chapters on mathematical aspects...